Polish Christmas traditions include thorough cleaning before Christmas Eve and believing an animal's voice can be human. Christmas and St. Nicholas Day are celebrated separately, weeks apart. On Christmas Eve, families light candles after the youngest sees the first star, then share wafer and wish for health. They remember deceased family and include animals in their meatless meal representing the four corners of earth. Carolers such as groups of boys dressed as biblical characters sing door-to-door and receive money.